gf_cont_struct_get¶

Synopsis

h = gf_cont_struct_get(cont_struct CS, 'init step size')
h = gf_cont_struct_get(cont_struct CS, 'min step size')
h = gf_cont_struct_get(cont_struct CS, 'max step size')
h = gf_cont_struct_get(cont_struct CS, 'step size decrement')
h = gf_cont_struct_get(cont_struct CS, 'step size increment')
[vec tangent_sol, scalar tangent_par] = gf_cont_struct_get(cont_struct CS, 'compute tangent', vec solution, scalar parameter, vec tangent_sol, scalar tangent_par)
E = gf_cont_struct_get(cont_struct CS, 'init Moore-Penrose continuation', vec solution, scalar parameter, scalar init_dir)
E = gf_cont_struct_get(cont_struct CS, 'Moore-Penrose continuation', vec solution, scalar parameter, vec tangent_sol, scalar tangent_par, scalar h)
t = gf_cont_struct_get(cont_struct CS, 'non-smooth bifurcation test', vec solution1, scalar parameter1, vec tangent_sol1, scalar tangent_par1, vec solution2, scalar parameter2, vec tangent_sol2, scalar tangent_par2)
t = gf_cont_struct_get(cont_struct CS, 'bifurcation test function')
{X, gamma, T_X, T_gamma} = gf_cont_struct_get(cont_struct CS, 'sing_data')
s = gf_cont_struct_get(cont_struct CS, 'char')
gf_cont_struct_get(cont_struct CS, 'display')

Description :

General function for querying information about cont_struct objects and for applying them to numerical continuation.

Command list :

h = gf_cont_struct_get(cont_struct CS, 'init step size')

Return an initial step size for continuation.

h = gf_cont_struct_get(cont_struct CS, 'min step size')

Return the minimum step size for continuation.

h = gf_cont_struct_get(cont_struct CS, 'max step size')

Return the maximum step size for continuation.

h = gf_cont_struct_get(cont_struct CS, 'step size decrement')

Return the decrement ratio of the step size for continuation.

h = gf_cont_struct_get(cont_struct CS, 'step size increment')

Return the increment ratio of the step size for continuation.

[vec tangent_sol, scalar tangent_par] = gf_cont_struct_get(cont_struct CS, 'compute tangent', vec solution, scalar parameter, vec tangent_sol, scalar tangent_par)

Compute and return an updated tangent.

E = gf_cont_struct_get(cont_struct CS, 'init Moore-Penrose continuation', vec solution, scalar parameter, scalar init_dir)

Initialise the Moore-Penrose continuation: Return a unit tangent to the solution curve at the point given by <literal>solution</literal> and <literal>parameter</literal>, and an initial step size for the continuation. Orientation of the computed tangent with respect to ther paramete ise feteiedri<"(al>pgon of <literal>>init_dir</literal>t.

E = gf_cont_struct_get(cont_struct CS, >Moore-Penrose continuation', vec solution, scalar parameter, vec tangent_sol, scalar tangent_pal, scalar

Computeonhe step of the Moore-Penrose continuation:Taket the poin given by <literal>solution</literal> and <literal>parameter</literal>t the tangent given by <literal>>tangent_sor</literal> and <literal>>tangent_par</literal>t and the step size <literal>hr</literal>t: Return anewe pointon(al>solution curv,r the cr resondying tangen;t l step size for the>nex step andopitionalyr the ur rnit step siz. Iof the returdri ste sizeequailszero,r the continuatio has failedn. pitionaly,e returo the typp ofanyse fecuted'sinualar poin. NOTEn:Tthe>nwe pointnetednoct tobhe avtedirn the odeldirn theend!.

= gf_cont_struct_get(cont_struct CS, 'non-smoot, test', vec solutio1n, scalar paramete1n, vec tangent_so1n, scalar vec solutio2n, scalar paramete2n, vec tangent_so2n, scalar

tangent_so1n</literal> and <literal>>tangent_pa1n</literal> and the point given by <literal>solutio2n</literal> and <literal>paramete2n</literal> with the tangent given by <literal>>tangent_so2n</literal> and <literal> tangent_parr</literal>t.

= gf_cont_struct_get(cont_struct CS, 'bifurcatior tesr

Return theclat valuep of the'bifurcation test functio; andevientualyo thewholhe alcuelate graphewhvenplasyingbetweentdifefereit ub-domains ofdifefereiiabi liyt.

= gf_cont_struct_get(cont_struct CS, 'sing_data')

Return d'sinualar poin ( <literal>Xr</literal>t <literal>_gammr</literal>)i sooredirn the cont_struct objec; andae cuplpp ofarrays ( <literal> T_r</literal>t <literal> T_gammr</literal>)i of tangenst tonal blolate ;solutio branchest h atemanlat fromn thret.

= gf_cont_struct_get(cont_struct CS, 'char')

p>Tthiscpanbheusend fo pernforying comarisonstbetweent wo difefereit cont_struct object. Tthis functio;ist tobhe comlmetd.>

gf_cont_struct_get(cont_struct CS, 'display')

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